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Test Code 0251 Mercury, 24 Hour, Urine

Additional Codes

Mayo Test ID
HGU

Reporting Name

Mercury, 24 Hr, U

Useful For

Detecting mercury toxicity

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Specimen Required


Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 10-mL urine tube (T068) or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 10 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

3. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.

Additional Information:

1. 24-Hour volume is required.

2. See Urine Preservatives in Special Instructions for multiple collections.

3. High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.


Barnes-Jewish Hospital Note:
Submit an entire 24-hour urine collection in a plain, brown urine container.

Additional Information:

1. Starting and ending times of collection are required.
2. Follow instructions for Urine Collection in Special Instructions.

3. Urine timed measurement is performed at an additional charge per 24-hour collection (CPT Code-81050).


Specimen Minimum Volume

2 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 7 days
  Frozen  7 days

Reference Values

0-15 years: not established

≥16 years: 0-9 mcg/specimen

Toxic concentration: >50 mcg/specimen

The concentration at which toxicity is expressed is widely variable between patients. 50 mcg/specimen is the lowest concentration at which toxicity is usually apparent.

Day(s) and Time(s) Performed

Monday through Friday; 7 p.m., Saturday; 2 p.m.

 

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

83825

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HGU Mercury, 24 Hr, U In Process

 

Result ID Test Result Name Result LOINC Value
8592 Mercury, 24 Hr, U 6693-6
TM5 Collection Duration 13362-9
VL3 Urine Volume 3167-4
856 Hg Concentration 21383-5

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Urine Preservative Collection Options

Ambient

No

Refrigerated

Preferred

Frozen

Yes

6N HCl

Yes

50% Acetic Acid

Yes

Na2CO3

No

Toluene

Yes

6N HNO3

Yes

Boric Acid

No

Thymol

No

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only
Laboratory Processing Instructions:

BJH Chemistry will forward to the performing laboratory.